/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.andware.volley.toolbox;

import com.andware.volley.NetworkResponse;
import com.andware.volley.ParseError;
import com.andware.volley.Response;
import com.andware.volley.Response.ErrorListener;
import com.andware.volley.Response.Listener;

import org.json.JSONException;
import org.json.JSONObject;

import java.io.UnsupportedEncodingException;

/**
 * A request for retrieving a {@link JSONObject} response body at a given URL, allowing for an
 * optional {@link JSONObject} to be passed in as part of the request body.
 */
public class JsonObjectRequest extends JsonRequest< JSONObject > {

    /**
     * Creates a new request.
     *
     * @param method        the HTTP method to use
     * @param url           URL to fetch the JSON from
     * @param jsonRequest   A {@link JSONObject} to post with the request. Null is allowed and
     *                      indicates no parameters will be posted along with request.
     * @param listener      Listener to receive the JSON response
     * @param errorListener Error listener, or null to ignore errors.
     */
    public JsonObjectRequest ( int method, String url, JSONObject jsonRequest,
                               Listener< JSONObject > listener, ErrorListener errorListener ) {
        super ( method, url, ( jsonRequest == null ) ? null : jsonRequest.toString (), listener,
                errorListener );
    }

    /**
     * Constructor which defaults to <code>GET</code> if <code>jsonRequest</code> is
     * <code>null</code>, <code>POST</code> otherwise.
     *
     * @see #JsonObjectRequest(int , String , JSONObject , Listener , ErrorListener)
     */
    public JsonObjectRequest ( String url, JSONObject jsonRequest, Listener< JSONObject > listener,
                               ErrorListener errorListener ) {
        this ( jsonRequest == null ? Method.GET : Method.POST, url, jsonRequest,
                listener, errorListener );
    }

    @Override
    protected Response< JSONObject > parseNetworkResponse ( NetworkResponse response ) {
        try {
            String jsonString =
                    new String ( response.data, HttpHeaderParser.parseCharset ( response.headers ) );
            return Response.success ( new JSONObject ( jsonString ),
                    HttpHeaderParser.parseCacheHeaders ( response ) );
        } catch ( UnsupportedEncodingException e ) {
            return Response.error ( new ParseError ( e ) );
        } catch ( JSONException je ) {
            return Response.error ( new ParseError ( je ) );
        }
    }
}
